After Becoming a Cow Horse, He Accidentally Awakened the System

This book is a systematic novel. And it also has a dark underbelly. The protagonist, Kui Max, is a standard cow horse. He has worked hard for more than ten years, but all he got was being rejected by his family, and he resorted to drinking to drown his sorrows in interpersonal relationships. One day, he accidentally awakened the system. In order to take revenge, he decided to be cruel. From then on, he made a fortune in a sinister way, and at the same time, he retaliated in a sinister way.